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A008974
Triangular number t(n) raised to power t(n).
11
1, 27, 46656, 10000000000, 437893890380859375, 5842587018385982521381124421, 33145523113253374862572728253364605812736, 106387358923716524807713475752456393740167855629859291136
OFFSET
1,2
LINKS
MAPLE
[ seq( ( n*(n+1)/2 )^( n*(n+1)/2 ), n=1..10) ];
MATHEMATICA
s=0; lst={}; Do[s+=n; AppendTo[lst, s^s], {n, 12}]; lst (* Vladimir Joseph Stephan Orlovsky, Jun 11 2009 *)
#^#&/@Accumulate[Range[10]] (* Harvey P. Dale, Sep 10 2014 *)
PROG
(PARI) a(n) = my(t=n*(n+1)/2); t^t; \\ Michel Marcus, Jan 16 2018
CROSSREFS
Cf. A000217.
Sequence in context: A171110 A034206 A085536 * A308537 A281956 A068738
KEYWORD
nonn
EXTENSIONS
One more term added by Vladimir Joseph Stephan Orlovsky, Jun 11 2009
STATUS
approved